Stacking device



July 13, 1954 s. CAMERANO STACKING DEVICE 2 Sheet-Sheet 1 Filed May 2, 1950 I N V EN TOR. 5:54am Or/vzmwo y 1954 s. CAMERANO 2,683,601

STACKING DEVICE Filed May 2, 1950 2 Sheets-Sheet 2 IN VEN TOR. i awsrm/v C4NERA NO lrroezvev Patented July 13, 1954 UNITED STATES FATENT OFFICE STACKING DEVICE Sebastian Oamerano, Clinton, Mass.

Application May 2, 1950, Serial No. 159,597

1 Claim. 1

This invention relates to new and improved devices for stacking and cooling waxed or coated envelopes and bags, special reference being had to envelopes and bags which are used to contain potato chips, corn chips and other greasy food materials and the like.

In the making of envelopes or bags of waxy paper or coated paper, such envelopes or bags issue from the forming machine in a heated condition so that when stacked immediately they tend to adhere to each other as they cool and the larger the stack, the more pressure is created thereon and thus the adherence between the separate bags or envelopes becomes worse.

This invention is a continuation in part of my prior application, Serial No. 137,652, filed January 9, 1.956; and the principal object of the present invention is to provide improved mechanism for controlling the speed of the conveyor carrying the envelopes or bags while they cool and before stacking; the provision of an initial feeding means or transfer device provided with power operated means in the form of belts for receiving the bags or envelopes from the forming machine and positively feeding the same to the guide plate, the latter being stepped. and ar ranged at an angle to the longitudinal direction of advance of the bags or envelopes from the forming machine, said device being operated by a separate motor and preferably being provided with means for controlling the speed thereof;

and the provision of simplified and novel adjustable stop means to position the leading edge of the bags or envelopes as they issue onto said conveyor from the power operated feed device.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which Fig. 1 is a perspective view of a machine according to the invention;

Fig. 2 is a view in side elevation thereof, parts being omitted;

Fig. 3 is a section on line 3-3 of Fig. 2 as shown in Figs. 1 and 2.

This invention comprises principally a conveyor It which in the disclosure herein is enibodicd in a rotating circular table supported on a column it which in turn is supported on a base i l of any desired or convenient construction. The column i2 carries a vertical shaft it driven at a low rate of speed through a reducing gear box it, the gear box being driven by a pulley connected to a variable diameter pulley 22, this pulley being or the Reeves type and mounted on the drive shaft of a motor 24.

The motor 24 is mounted on a pivoted bed 26 having pivot pins 28 supporting the same on a ring 29 on the column l2 and the plate 28 being arc-shaped as at 30 to accommodate the column 12. The bed 26 has an arm 32 extending to the opposite side of the column 12 and receiving ad lusting device 34 which in this case assumes the form of a threaded rod journaled in the ring 29. As the threaded rod 34 is turned, it pivots arm 32 and hence bed 26 so that the motor 24 is moved upwardly or downwardly depending on the direction of rotation of the screw shaft 34. As the motor moves up, the Reeves type pulley 22 spreads to provide a smaller diameter to slow down the rotation of the table it and, of course, the opposite effect takes place upon lowering the motor 24.

A large collar 36 is secured in rotatively adjustable position on the column 52. A tube 38 extends radially outwardly from the collar 36 and slidingly receives a rod (its supporting a vertical rod 42 in vertically adjustable position. Rod 42 has a. motor and plate A l secured thereto and at its upper end it carries a frame 36 in which are journaled a pair of rollers as at 43. These rollers are provided with belts and are driven by a motor as by a belt 52. This arrangement forms a power-driven positive transfer device from the envelope or bag forming machine to the ledge guide indicated at 54 and more fully shown and described in my aforementioned copending application. A control 55 may be used to control the speed of motors 44 and 24 together if desired.

It is to be noted that the rod 42 may be adjusted vertically so as to reposition frame 46 where desired and rod it may be adjusted radially providing a very flexibly arranged takeoff device for the envelopes. A wire hold-down device 56 may be mounted on the frame 46 so as to ensure aligned progress of the bags or envelopes to and down the guide 5:3.

Another collar 58 is mounted on the column l2 below collar 36 and this collar mounts a rod 60 in general radial relation to the co1umn l2. At its outer end rod 60 vertically adjustably mounts a vertical rod 62 on which is mounted a rod 64 rotatively adjustable thereon. The rod $4 in turn mounts a stacking board 66 against which the bags or envelopes 68 move against and become stacked, table it moving in the direction of the arrow, see Fig. 1. Of course, the waxed bags are cooled by the time they run up on the stacking board 66.

Rod 32 mounts another adjustable rod which extends over the table It and adjustably carries a vertical pin or rod 70 against which the bags.

impinge and are stopped as they are directed from the transfer device 46 down the guide 54.

This stop pin 10 is easily adjustable radially of the table It to take care of different sizes of bags or envelopes and require them to stop uniformly as clearly shown in Fig. 1. The rod 62 may also be utilized to adjustably support a curved table edgeguide 72 which prevents the envelopes from sliding off the table when they are being stacked against the board 58.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed otherwise than as set forth in the claim, but what I claim is:

Apparatus of the class described comprising a table, variable speed means to rotate the table, an article feeding device radially arranged above the table, means to cause the feeding device to operate at a certain speed, means to vary the speed of rotation of the table relative to the speed of the feeding device, radially adjustable stop means in the path of the articles rising from the feeding device, said stop means being above the table, and a stacking device above the table angularly spaced from the feeding device in the direction of rotation of the table.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 867,684 Thomas Oct. 8, 1907 1,019,059 Lewis Mar. 5, 1912 1,272,847 Pertz July 16, 1918 1,581,583 Low Apr. 20, 1926 1,792,693 Johnson Feb. 17, 1931 2,124,858 Marchand July 26, 1938 2,238,010 Breman Apr. 8, 19 1 2,433,530 Pratt Dec. 30, 1947 2,477,830 Sandberg Aug. 2, 1949 

